Alexis is single and had $289,000 in taxable income. Use the rates from Table 2.3. a. What is the average tax rate? (Do not round intermediate calculations and round your answer to 2 decimal palces, e.g., 32.16.) b. What is the marginal tax rate? (Do not round intermediate calculations and round your answer to the nearest whole numbe}, e.g., 32.) Taxable income Tax Rale TABLE 2.3 Personal tax rates for 2018 (unmarried Individuals) $ 9,525 9,525- 38.700 38,700- 82,500 82,500- 157.500 157.500- 200,000 200,000, 500,000 500,000+ 10% 12 22 24 32 35 37